diff --git a/manifest.json b/manifest.json
index 3035233..55df52e 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "id": "istart-note-ai",
   "name": "IStart-Note-AI",
-  "version": "1.6.1",
+  "version": "1.7.0",
   "minAppVersion": "1.4.0",
   "description": "Generate structured knowledge notes from questions and selected text using DeepSeek AI, with automatic concept pages, bidirectional links, and a question graph.",
   "author": "Yan",
diff --git a/package.json b/package.json
index 891dbbc..f33a2e7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "istart-note-ai",
-  "version": "1.6.1",
+  "version": "1.7.0",
   "description": "IStart-Note-AI: DeepSeek-powered knowledge graph plugin for Obsidian",
   "main": "main.js",
   "scripts": {
diff --git a/src/ConceptCompleter.ts b/src/ai/ConceptCompleter.ts
similarity index 99%
rename from src/ConceptCompleter.ts
rename to src/ai/ConceptCompleter.ts
index aa6bc07..18dcc81 100644
--- a/src/ConceptCompleter.ts
+++ b/src/ai/ConceptCompleter.ts
@@ -1,5 +1,5 @@
 import { requestUrl } from "obsidian";
-import { DeepSeekSettings, CompletionDepth, ConceptCompletionResult } from "./types";
+import { DeepSeekSettings, CompletionDepth, ConceptCompletionResult } from "../types";
 
 const LIGHT_PROMPT = `你是一个个人知识图谱助手。请为以下概念生成简明的定义和关联概念。
 
diff --git a/src/ContextQAClient.ts b/src/ai/ContextQAClient.ts
similarity index 99%
rename from src/ContextQAClient.ts
rename to src/ai/ContextQAClient.ts
index 8c54171..065d75f 100644
--- a/src/ContextQAClient.ts
+++ b/src/ai/ContextQAClient.ts
@@ -1,5 +1,5 @@
 import { requestUrl } from "obsidian";
-import { DeepSeekSettings, ContextQAInput, ContextQAResponse, Relation } from "./types";
+import { DeepSeekSettings, ContextQAInput, ContextQAResponse, Relation } from "../types";
 
 const buildPrompt = (input: ContextQAInput): string => `请基于以下上下文回答问题。
 
diff --git a/src/DeepSeekClient.ts b/src/ai/DeepSeekClient.ts
similarity index 97%
rename from src/DeepSeekClient.ts
rename to src/ai/DeepSeekClient.ts
index cce4591..ce27d98 100644
--- a/src/DeepSeekClient.ts
+++ b/src/ai/DeepSeekClient.ts
@@ -1,5 +1,5 @@
 import { requestUrl } from "obsidian";
-import { DeepSeekSettings, DeepSeekResponse } from "./types";
+import { DeepSeekSettings, DeepSeekResponse } from "../types";
 
 const SYSTEM_PROMPT = `你是一个知识图谱构建助手。用户会向你提问，你需要：
 1. 给出清晰的回答
diff --git a/src/DiagramGenerator.ts b/src/ai/DiagramGenerator.ts
similarity index 99%
rename from src/DiagramGenerator.ts
rename to src/ai/DiagramGenerator.ts
index 85d5565..d405afb 100644
--- a/src/DiagramGenerator.ts
+++ b/src/ai/DiagramGenerator.ts
@@ -1,5 +1,5 @@
 import { requestUrl } from "obsidian";
-import { DeepSeekSettings } from "./types";
+import { DeepSeekSettings } from "../types";
 
 export type DiagramType =
   | "auto"
diff --git a/src/QuestionClassifier.ts b/src/ai/QuestionClassifier.ts
similarity index 97%
rename from src/QuestionClassifier.ts
rename to src/ai/QuestionClassifier.ts
index cd4a072..0ec5e6d 100644
--- a/src/QuestionClassifier.ts
+++ b/src/ai/QuestionClassifier.ts
@@ -1,5 +1,5 @@
 import { requestUrl } from "obsidian";
-import { DeepSeekSettings, QuestionClassification } from "./types";
+import { DeepSeekSettings, QuestionClassification } from "../types";
 
 const CLASSIFY_PROMPT = `你是一个知识图谱助手，负责对用户的问题进行分类和关联。
 
diff --git a/src/SectionAppender.ts b/src/ai/SectionAppender.ts
similarity index 99%
rename from src/SectionAppender.ts
rename to src/ai/SectionAppender.ts
index 5468e32..ddb6f18 100644
--- a/src/SectionAppender.ts
+++ b/src/ai/SectionAppender.ts
@@ -1,5 +1,5 @@
 import { App, TFile, requestUrl } from "obsidian";
-import { DeepSeekSettings } from "./types";
+import { DeepSeekSettings } from "../types";
 
 export interface SectionAppendResult {
   items: string[];   // 新增条目列表
diff --git a/src/ConceptCompletionModal.ts b/src/features/concept/ConceptCompletionModal.ts
similarity index 99%
rename from src/ConceptCompletionModal.ts
rename to src/features/concept/ConceptCompletionModal.ts
index 2541637..7d72735 100644
--- a/src/ConceptCompletionModal.ts
+++ b/src/features/concept/ConceptCompletionModal.ts
@@ -1,5 +1,5 @@
 import { App, Modal, Setting, MarkdownRenderer, Component } from "obsidian";
-import { CompletionDepth } from "./types";
+import { CompletionDepth } from "../../types";
 
 export class DepthSelectModal extends Modal {
   private depth: CompletionDepth = "standard";
diff --git a/src/ConceptPageManager.ts b/src/features/concept/ConceptPageManager.ts
similarity index 99%
rename from src/ConceptPageManager.ts
rename to src/features/concept/ConceptPageManager.ts
index c0edb9a..fba1ac8 100644
--- a/src/ConceptPageManager.ts
+++ b/src/features/concept/ConceptPageManager.ts
@@ -1,5 +1,5 @@
 import { App, TFile, parseYaml, stringifyYaml, normalizePath } from "obsidian";
-import { ConceptCompletionResult, CompletionDepth, DeepSeekSettings } from "./types";
+import { ConceptCompletionResult, CompletionDepth, DeepSeekSettings } from "../../types";
 
 export interface ConceptPageInfo {
   file: TFile;
diff --git a/src/ContextQAModal.ts b/src/features/context-qa/ContextQAModal.ts
similarity index 100%
rename from src/ContextQAModal.ts
rename to src/features/context-qa/ContextQAModal.ts
diff --git a/src/DiagramModal.ts b/src/features/diagram/DiagramModal.ts
similarity index 97%
rename from src/DiagramModal.ts
rename to src/features/diagram/DiagramModal.ts
index 1e8c441..7911bc6 100644
--- a/src/DiagramModal.ts
+++ b/src/features/diagram/DiagramModal.ts
@@ -1,5 +1,5 @@
 import { App, Modal, Setting, MarkdownRenderer, Component } from "obsidian";
-import { DiagramType, DiagramResult, DiagramGenerator } from "./DiagramGenerator";
+import { DiagramType, DiagramResult, DiagramGenerator } from "../../ai/DiagramGenerator";
 
 /**
  * 图表类型选择弹窗
diff --git a/src/QuestionClassifyModal.ts b/src/features/question/QuestionClassifyModal.ts
similarity index 97%
rename from src/QuestionClassifyModal.ts
rename to src/features/question/QuestionClassifyModal.ts
index 21321c2..f78b79d 100644
--- a/src/QuestionClassifyModal.ts
+++ b/src/features/question/QuestionClassifyModal.ts
@@ -1,5 +1,5 @@
 import { App, Modal, Setting } from "obsidian";
-import { QuestionClassification, QuestionCategory } from "./types";
+import { QuestionClassification, QuestionCategory } from "../../types";
 
 const CATEGORY_LABELS: Record<QuestionCategory, string> = {
   new: "🆕 新问题",
diff --git a/src/QuestionGraphManager.ts b/src/features/question/QuestionGraphManager.ts
similarity index 99%
rename from src/QuestionGraphManager.ts
rename to src/features/question/QuestionGraphManager.ts
index 622fbd9..356232e 100644
--- a/src/QuestionGraphManager.ts
+++ b/src/features/question/QuestionGraphManager.ts
@@ -1,5 +1,5 @@
 import { App, TFile, normalizePath, stringifyYaml } from "obsidian";
-import { DeepSeekSettings, QuestionClassification } from "./types";
+import { DeepSeekSettings, QuestionClassification } from "../../types";
 
 export interface QuestionMeta {
   file: TFile;
diff --git a/src/QuestionModal.ts b/src/features/question/QuestionModal.ts
similarity index 100%
rename from src/QuestionModal.ts
rename to src/features/question/QuestionModal.ts
diff --git a/src/SectionAppendModal.ts b/src/features/section/SectionAppendModal.ts
similarity index 100%
rename from src/SectionAppendModal.ts
rename to src/features/section/SectionAppendModal.ts
diff --git a/src/BaiduAuthModal.ts b/src/features/sync/BaiduAuthModal.ts
similarity index 98%
rename from src/BaiduAuthModal.ts
rename to src/features/sync/BaiduAuthModal.ts
index 5adba82..998e8b0 100644
--- a/src/BaiduAuthModal.ts
+++ b/src/features/sync/BaiduAuthModal.ts
@@ -1,6 +1,6 @@
 import { App, Modal, Notice, Setting } from "obsidian";
 import { BaiduPanClient } from "./BaiduPanClient";
-import { BaiduSyncConfig } from "./types";
+import { BaiduSyncConfig } from "../../types";
 
 export class BaiduAuthModal extends Modal {
   private code = "";
diff --git a/src/BaiduPanClient.ts b/src/features/sync/BaiduPanClient.ts
similarity index 99%
rename from src/BaiduPanClient.ts
rename to src/features/sync/BaiduPanClient.ts
index 4ed8791..ca33162 100644
--- a/src/BaiduPanClient.ts
+++ b/src/features/sync/BaiduPanClient.ts
@@ -9,8 +9,8 @@
  */
 
 import { requestUrl } from "obsidian";
-import { BaiduSyncConfig } from "./types";
-import { md5 } from "./md5";
+import { BaiduSyncConfig } from "../../types";
+import { md5 } from "../../util/md5";
 
 const PAN_API = "https://pan.baidu.com/rest/2.0/xpan";
 const UPLOAD_API = "https://d.pcs.baidu.com/rest/2.0/pcs/superfile2";
diff --git a/src/BaiduSyncMeta.ts b/src/features/sync/BaiduSyncMeta.ts
similarity index 100%
rename from src/BaiduSyncMeta.ts
rename to src/features/sync/BaiduSyncMeta.ts
diff --git a/src/BaiduSyncModal.ts b/src/features/sync/BaiduSyncModal.ts
similarity index 99%
rename from src/BaiduSyncModal.ts
rename to src/features/sync/BaiduSyncModal.ts
index 8222936..36d9772 100644
--- a/src/BaiduSyncModal.ts
+++ b/src/features/sync/BaiduSyncModal.ts
@@ -1,6 +1,6 @@
 import { App, Modal, Notice, Setting } from "obsidian";
 import { BaiduSyncService } from "./BaiduSyncService";
-import { BaiduSyncConfig } from "./types";
+import { BaiduSyncConfig } from "../../types";
 
 type SyncMode = "sync" | "backup" | "restore";
 type ConflictStrategy = "local" | "remote" | "keep-both";
diff --git a/src/BaiduSyncService.ts b/src/features/sync/BaiduSyncService.ts
similarity index 99%
rename from src/BaiduSyncService.ts
rename to src/features/sync/BaiduSyncService.ts
index 8a83e0c..8d3ec29 100644
--- a/src/BaiduSyncService.ts
+++ b/src/features/sync/BaiduSyncService.ts
@@ -1,5 +1,5 @@
 import { App, Notice, TFile } from "obsidian";
-import { BaiduSyncConfig, DeepSeekSettings, SyncableConfig } from "./types";
+import { BaiduSyncConfig, DeepSeekSettings, SyncableConfig } from "../../types";
 import { BaiduPanClient } from "./BaiduPanClient";
 import { BaiduSyncMeta, SyncAction, SyncPlan } from "./BaiduSyncMeta";
 
diff --git a/src/BaiduSyncView.ts b/src/features/sync/BaiduSyncView.ts
similarity index 99%
rename from src/BaiduSyncView.ts
rename to src/features/sync/BaiduSyncView.ts
index 135dd73..e5fdc54 100644
--- a/src/BaiduSyncView.ts
+++ b/src/features/sync/BaiduSyncView.ts
@@ -2,7 +2,7 @@ import { ItemView, Notice, TFile, WorkspaceLeaf } from "obsidian";
 import { BaiduSyncService } from "./BaiduSyncService";
 import { BaiduSyncMeta, SyncAction } from "./BaiduSyncMeta";
 import { BaiduPanClient } from "./BaiduPanClient";
-import type DeepSeekPlugin from "./main";
+import type DeepSeekPlugin from "../../main";
 
 export const SYNC_VIEW_TYPE = "istart-baidu-sync-view";
 
diff --git a/src/main.ts b/src/main.ts
index b5e0d73..6055e0b 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,26 +1,26 @@
 import { Notice, Plugin, TFile, normalizePath } from "obsidian";
 import { DeepSeekSettings, DEFAULT_SETTINGS, CompletionDepth } from "./types";
-import { DeepSeekClient } from "./DeepSeekClient";
-import { VaultWriter } from "./VaultWriter";
-import { QuestionModal } from "./QuestionModal";
-import { DeepSeekSettingsTab } from "./SettingsTab";
-import { ConceptCompleter } from "./ConceptCompleter";
-import { ConceptPageManager } from "./ConceptPageManager";
-import { DepthSelectModal, PreviewModal, BatchScanModal } from "./ConceptCompletionModal";
-import { QuestionClassifier } from "./QuestionClassifier";
-import { QuestionGraphManager } from "./QuestionGraphManager";
-import { QuestionClassifyModal } from "./QuestionClassifyModal";
-import { ContextQAClient } from "./ContextQAClient";
-import { ContextQAModal } from "./ContextQAModal";
-import { SectionAppender } from "./SectionAppender";
-import { SectionAppendModal, SectionPreviewModal } from "./SectionAppendModal";
-import { BaiduSyncService } from "./BaiduSyncService";
-import { BaiduAuthModal } from "./BaiduAuthModal";
-import { BaiduSyncModal } from "./BaiduSyncModal";
+import { DeepSeekClient } from "./ai/DeepSeekClient";
+import { VaultWriter } from "./vault/VaultWriter";
+import { QuestionModal } from "./features/question/QuestionModal";
+import { DeepSeekSettingsTab } from "./settings/SettingsTab";
+import { ConceptCompleter } from "./ai/ConceptCompleter";
+import { ConceptPageManager } from "./features/concept/ConceptPageManager";
+import { DepthSelectModal, PreviewModal, BatchScanModal } from "./features/concept/ConceptCompletionModal";
+import { QuestionClassifier } from "./ai/QuestionClassifier";
+import { QuestionGraphManager } from "./features/question/QuestionGraphManager";
+import { QuestionClassifyModal } from "./features/question/QuestionClassifyModal";
+import { ContextQAClient } from "./ai/ContextQAClient";
+import { ContextQAModal } from "./features/context-qa/ContextQAModal";
+import { SectionAppender } from "./ai/SectionAppender";
+import { SectionAppendModal, SectionPreviewModal } from "./features/section/SectionAppendModal";
+import { BaiduSyncService } from "./features/sync/BaiduSyncService";
+import { BaiduAuthModal } from "./features/sync/BaiduAuthModal";
+import { BaiduSyncModal } from "./features/sync/BaiduSyncModal";
 import { DEFAULT_BAIDU_SYNC_CONFIG } from "./types";
-import { BaiduSyncView, SYNC_VIEW_TYPE } from "./BaiduSyncView";
-import { DiagramGenerator, DiagramType } from "./DiagramGenerator";
-import { DiagramTypeModal, DiagramPreviewModal } from "./DiagramModal";
+import { BaiduSyncView, SYNC_VIEW_TYPE } from "./features/sync/BaiduSyncView";
+import { DiagramGenerator, DiagramType } from "./ai/DiagramGenerator";
+import { DiagramTypeModal, DiagramPreviewModal } from "./features/diagram/DiagramModal";
 
 export default class DeepSeekPlugin extends Plugin {
   settings: DeepSeekSettings;
diff --git a/src/SettingsTab.ts b/src/settings/SettingsTab.ts
similarity index 98%
rename from src/SettingsTab.ts
rename to src/settings/SettingsTab.ts
index 76d95e4..64b4a0a 100644
--- a/src/SettingsTab.ts
+++ b/src/settings/SettingsTab.ts
@@ -1,6 +1,6 @@
 import { App, PluginSettingTab, Setting } from "obsidian";
-import type DeepSeekPlugin from "./main";
-import { BaiduAuthModal } from "./BaiduAuthModal";
+import type DeepSeekPlugin from "../main";
+import { BaiduAuthModal } from "../features/sync/BaiduAuthModal";
 
 export class DeepSeekSettingsTab extends PluginSettingTab {
   constructor(app: App, private plugin: DeepSeekPlugin) {
diff --git a/src/md5.ts b/src/util/md5.ts
similarity index 100%
rename from src/md5.ts
rename to src/util/md5.ts
diff --git a/src/VaultWriter.ts b/src/vault/VaultWriter.ts
similarity index 99%
rename from src/VaultWriter.ts
rename to src/vault/VaultWriter.ts
index 0793364..d30bf06 100644
--- a/src/VaultWriter.ts
+++ b/src/vault/VaultWriter.ts
@@ -1,5 +1,5 @@
 import { App, TFile, normalizePath } from "obsidian";
-import { DeepSeekResponse, DeepSeekSettings, ContextQAInput, ContextQAResponse } from "./types";
+import { DeepSeekResponse, DeepSeekSettings, ContextQAInput, ContextQAResponse } from "../types";
 
 export class VaultWriter {
   constructor(private app: App, private settings: DeepSeekSettings) {}
diff --git a/versions.json b/versions.json
index df84d87..eec70cc 100644
--- a/versions.json
+++ b/versions.json
@@ -9,5 +9,6 @@
   "1.5.6": "1.4.0",
   "1.5.7": "1.4.0",
   "1.6.0": "1.4.0",
-  "1.6.1": "1.4.0"
+  "1.6.1": "1.4.0",
+  "1.7.0": "1.4.0"
 }